There were 8,793 households out of which 30.00% had children under the age of 18 living with them, 57.00% were married couples living together, 9.00% had a female householder with no husband present, and 31.20% were non-families. 28.70% of all households were made up of individuals and 15.30% had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 2.93.

In the county, the population was spread out with 24.00% under the age of 18, 8.40% from 18 to 24, 27.20% from 25 to 44, 22.30% from 45 to 64, and 18.10% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 104.00 males. For every 100 females age 18 and over, there were 103.70 males.

The median income for a household in the county was $31,368, and the median income for a family was $40,019. Males had a median income of $32,401 versus $20,158 for females. The per capita income for the county was $16,702. About 11.20% of families and 13.80% of the population were below the poverty line, including 17.60% of those under age 18 and 9.60% of those age 65 or over.

Prior to 1952, Pampa County was primarily Democratic similar to most of Texas & the Solid South. The county only gave a Republican presidential candidate a majority before 1952 in 1928 when Herbert Hoover won the county thanks to anti-Catholic sentiment towards Al Smith. Starting with the 1952 election, the county has become a Republican stronghold along with the rest of the Texas Panhandle. This level of Republican dominance has increased in recent years, as every Republican presidential candidate in the second millennium has racked up 80 percent of the county's vote. Additionally, in the two most recent presidential elections, Democrats Barack Obama & Hillary Clinton have failed to win even 1,000 votes total in the county.